Mixing device



March 11 1924. 1,486,539

J. K. NORVELL MIXING DEVICE Filed Aug. 24, 1925 Patented Mar. 11, i924.

JAMES K. NORVELL, OF VJAR-TRACE, TENNESSEE.

MIXING DEVICE.

Application filed August 2 1, 1923.

r1 Z all whom 226 may concern:

Be it known that I, JAIWES .K. NoRvELL, a citizen of the United States, residing at lVai-tr'acc, 1n the county of Bedford and State of Tennessee, have invented a new and useful Mixing Device, of nhich the following 1s a specification.

This invention relates to mixing devices of the auxiliary air inlet type for internal COIIlbtlStlOIl. engines.

The object of the invention is to providea simply constructed device of this character for location between the carbureter and the intake manifold whereby the fuel admitted at this point will be thoroughly broken up into fine particles and projected into the manifold with a whirling motion.

With the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings Figure 1 represents a side elevation partly in section with parts broken out of the device constituting this invention shown applied.

Fig. 2 is a section taken on the line 2-2 of Fig. 1.

Fig. 3 is a detail side elevation of the mixing device or whirler; and

Fig. 4 is an end elevation thereof.

In the embodied illustrated the instrument board 1 of an automobile is shown in section in which is mounted a pipe 2 for supplying air to the mixer 10 constituting this invention. A pet cock 3 controls the supply of air through the pipe 2 and is located in convenient position for operation by the driver.

The mixing device 10 is shown in the form of a plate 11 located between the carbureter 5 and the intake manifold 6 and which has a central opening 10. A conduit 12 extends from the center of said opening edgewise through the plate 11 and through a tubular extension 13 projecting at an oblique angle from the edge of said plate as shown clearly in Fig. 2. This conduit 12 has a right angular extension 14 terminating in a nipple 15 on which is mounted Serial No. 659,137.

the mixer or whirling device 16. This device is in the form of a tube with longitudinally extending spiral blades 17 on its outer face and said tube has an internal 1y threaded socket 18 at its inner end to be screwed onto the nipple 15. The conduit 19 extending longitudinally through the mixer 16 communicates with conduit 12 through the branch 14 thereof. This conduit 19 opens'through the outer end of the member 16 between the spirals or blades 17, the discharge orifices being shown at 20. F our blades 17 are shown on member 16 the grooves 21 between them registering with the opening 10 and forming discharge passages for the fuel supplied from the carbureter 5 and imparts to the entering fuel a whirling motion. The four orifices are designed to supply air to the mixture drawn in from the carbureter by the suction in the engine.

The outer end of conduit 12 is enlarged to form a chamber 22 in which is mounted a coiled spring 23 which operates to normally hold a valve 2 1 closed against its seat 25 so that when the pet cock 3 is open and the engine not running no gas will escape through conduit 12.

The outer end of the neck or tubular extension 13 is closed by an elbow shaped coupling 26 screwed onto said neck and which has conduits 27 and 28 extending therethrough in planes at right angles to each other, conduit 27 being normally closed by valve 24.

A screw plug 29 closes the outer end of conduit 27 and extends across the path of conduit 28 being adjustable to vary the amount of air admitted through said con duits.

The pipe or tube 2 is connected with the coupling 26 in any suitable manner and communicates with the conduit 28 thereof.

In the use of this device it being connected up as shown in the drawings, when the motor, not shown, is in motion the mixture drawn in from the carbureter 5 is divided into four equal parts by the blades of the mixer 16, said mixture passing through the grooves 21 between these blades and en tering the manifold with a whirling motion. After the engine has been started and has sufficiently warmed up the pet cock 3 is opened which permits air to be sucked in through pipe 2, conduits 28 and 2'? and con duit 12 entering the manifold through the orifices 20. The air entering through these orifices contacts with the fuel entering through grooves 21 from the carbureter and unite in a whirling motion whereby the particles of the fuel are thoroughly mixed with the air ready for the explosion chamber of the engine.

It is understood of course that all parts of this device may be made of different sizes and compacity to fit different motors.

By providing the pet cock 3 the amount of additional air supplied may be controlled and when a rich mixture is desired air through pipe 2 may be cut off entirely.

This attachment may be readily applied to any internal combustion engine by removing the bolts which connect the carbureter with the intake manifold the plate 11 being inserted between the flanges thercof and secured by the same bolts or those slightly longer. After this plate has been so mounted the pipe 2 is mounted on the instrument board 1 as shown in Fig. 1 and the device is ready for use.

Various changes in the form, shape, proportion and other minor details of construction may be made without departing from the principle or sacrificing any of the advantages of the claimed invention.

I claim 1. A device of the class described comprising a mixer for insertion between the carburetor and intake manifold of an internal combustion engine, said mixer having grooves and orifices arranged to intersect each other one to supply fuel and the other air and spiral blades on said mixer to impart a whirling motion to the mixture delivered by the mixer.

2. A device of the class described comprising a mixer for insertion between the carbureter and intake manifold of an internal combustion engine, said mixer being in the form of a tubular spiral closed at its outer end with orifices in the side walls of said outer end opening between the blades of the spiral, and air supply means connected with said tube to discharge through said orifices and commingle with the fuel entering through the grooves in the outer face of the mixer.

3. A device of the class described comprising a plate to be inserted between the carbureter and intake manifold of an internal combustion engine, said plate having an opening with a conduit extending radially from the center thereof, a tube having one end registering with said conduit and its other end closed, longitudinally extending spiral blades on the outer face of said tube with the grooves formed between said blades registering with said plate opening through which the mixture from the carbureter passes to the intake manifold, said tube having orifices opening into said grooves at their outer ends in a plane at right angles to the grooves to admit air into the paths of said mixture, said mixture and air being fed to the intake manifold with a whirling motion.

4-. A device of the class described comprising a mixer for insertion between the carbureter and intake manifold of an internal combustion engine, said mixer including a plate having a conduit leading there-' from, a spring pressed valve located in said conduit, a pipe connecting said conduit with the atmosphere said pipe being adapted to be supported at a suitable point and equipped with a pet cock for controlling the air passing through the mixer, a tubular member connected with said plate and having means to supply fuel to the intake manifold with a whirling motion.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

JAMES K. NORVELL.

Witnesses GEORGE A. lamina, B. V. CHRISTIAN, Sr. 

